Open AccessA Putative ECF σ Factor Gene, rpoI, Regulates Siderophore Production in Rhizobium leguminosarum
Author(s) -
Kay Yeoman,
Andreas May,
Nicola G. deLuca,
Daniel J. Stuckey,
Andrew Johnston
Publication year - 1999
Publication title -
molecular plant-microbe interactions
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.565
H-Index - 153
eISSN - 1943-7706
pISSN - 0894-0282
DOI - 10.1094/mpmi.1999.12.11.994
Subject(s) - rhizobium leguminosarum , siderophore , biology , gene , mutant , transcription (linguistics) , rhizobium , microbiology and biotechnology , overproduction , genetics , rhizobiaceae , symbiosis , bacteria , linguistics , philosophy
A cloned Rhizobium leguminosarum gene, termed rpoI, when transferred to wild-type strains, caused overproduction of the siderophore vicibactin. An rpoI mutant was defective in Fe uptake but was unaffected in symbiotic N2 fixation. The RpoI gene product was similar in sequence to extra-cytoplasmic sigma factors of RNA polymerase. Transcription of rpoI was reduced in cells grown in medium that was replete with Fe.
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